Лако-красочные материалы — производство

A wide range of thermoplastic acrylic resins is commercially available, with specific performance properties including resistance to oils, acids and alkali. They are used in a diverse range of applications which cover:

• Automotive paints (OEM)

• Automotive refinishing paints & lacquers

• Aerosol paints

• Ceramic lacquers

• Plastic coatings

• Interior & exterior masonry & concrete coatings

• Anticorrosive coatings

• Maintenance coatings

• Metal coatings

• Road line paints

1. Automotive Finishing by Kevin O’Hara LRSC

The first major commercial application for thermoplastic acrylics was as a replacement for nitrocellulose based lacquers in automotive topcoats. This was pioneered during the early mid ‘50’s by General Motors in the U. S., and quickly spread to other General Motor plants around the world. Automotive coatings incorporating TPA’s included original equipment coating systems (OEM, i. e. new cars) and repair (refinish). The quality and performance requirements in these markets are among the highest in the paint industry. OEM and refinish systems are very similar. The major difference is that the refinish coating must dry at or near ambient conditions.

The main requirements for automotive finishes are appearance, durability and corrosion protection. Topcoats must have excellent appearance defined in terms of smoothness, gloss, colour, and pattern (for metallic finishes).

Compared with those based on nitrocellulose, thermoplastic acrylic lacquers offered superior exterior durability, colour and colour stability whilst retaining some of the polishing properties of nitrocellulose. By combining the new, more colour fast organic pigments which were coming onto the market at the same time, it suddenly became possible greatly to extend the range of colours offered by the car maker. As well as solid colours, the use of acrylic resin technology opened the door to metallic or polychromatic finishes due, again, to their significantly superior performance compared with nitrocellulose. Brightly coloured, durable metallic car finishes would not have been possible without the development of acrylic coating resins.